#define _CRT_SECURE_NO_WARNINGS 1

#include<stdio.h>

void swap(int* x, int* y)
{
	*x = *x ^ *y;
	*y = *x ^ *y;
	*x = *x ^ *y;
}

int main()
{
	int a = 0;
	int b = 0;
	scanf("%d %d", &a, &b);
	swap(&a, &b);
	printf("%d %d", a, b);
	return 0;
}